CN106706268A - Method and device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium - Google Patents
Method and device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium Download PDFInfo
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- CN106706268A CN106706268A CN201710113586.6A CN201710113586A CN106706268A CN 106706268 A CN106706268 A CN 106706268A CN 201710113586 A CN201710113586 A CN 201710113586A CN 106706268 A CN106706268 A CN 106706268A
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- resistance coefficient
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The invention discloses a method and device for measuring the viscous resistance coefficient and the inertial resistance coefficient of a porous medium. The method comprises the following steps: 1, obtaining the pressure drop delta p of fluid before and after the fluid flows through the porous medium, and the flowing speed v of the fluid through the sensor; 2, carrying out the fitting of delta p and v in a quadratic polynomial: delta p=a<1>*v*v+a<2>*v, and obtaining the values of parameters a<1> and a<2>; 3, calculating the viscous resistance coefficient 1/alpha and the inertial resistance coefficient C2, wherein the viscous resistance coefficient 1/alpha and the inertial resistance coefficient C2 meets the formulas (shown in the description), delta n is the thickness of the material of the porous medium, mu is the dynamic viscosity of the fluid and Rho is the density of the fluid. The invention also provided a device for measuring the viscous resistance coefficient and the inertial resistance coefficient of the porous medium. The method can calculate the viscous resistance coefficient and the inertial resistance coefficient through measuring the flowing speed of the fluid and the pressure difference before and after the fluid flows through the porous medium, is simple, and is high in precision. The device for measuring the parameters is compact in structure, is low in cost, and is very convenient to use.
Description
Technical field
The invention belongs to fluid hydrodynamics field of measuring technique, more particularly to a kind of porous media viscosity factor
With inertial resistance coefficient measuring method and device.
Background technology
Porous media, the skeleton being made up of solid matter and the slight void institute that a large amount of dense clusters are separated into by skeleton
The material of composition.Slight void in porous media is probably what is interconnected, it is also possible to which part connection, part do not connect
's.Due to porous media structure characteristic, the research for the drag characteristic of porous media is also very deficient, there is presently no any
One technology can accurately measure the resistance coefficient and inertia coeffeicent of porous media, and the application to porous media brings very
Inconvenience more.Existing measurement apparatus are mostly fairly simple, and measurement error is big, and the accuracy to result is affected greatly.
The content of the invention
The purpose of the present invention is to overcome existing porous media viscosity factor complicated with inertial resistance coefficient measuring method,
The low defect of precision.
Another object of the present invention is the defect for overcoming existing measurement apparatus measurement error big.
The present invention provide technical scheme be：
A kind of porous media material viscosity factor and inertial resistance coefficient measuring method, comprise the following steps：
Step one, use sensor obtain fluid flow through porous media material before and after pressure drop Δ P and fluid flow velocity v；
Step 2, Δ P and v are fitted to quadratic polynomial Δ p=a1v2+a2V, obtains parameter a1And a2Value；
Step 3, the calculating α of viscosity factor 1/ and inertial resistance coefficient C2
Δ n is the thickness of porous media material in formula, and μ is the dynamic viscosity of fluid, and ρ is the density of fluid.
Preferably, the fluid is air.
Preferably, in step one, porous media material is not installed in pipeline is measured first, gives certain fluid stream
Amount, measurement fluid flows through the pressure drop Δ p before and after measurement pipeline1；Then porous media material is encased in measurement pipeline, is given
Identical fluid flow, measurement fluid flows through the pressure drop Δ p before and after measurement pipeline2, and make Δ p=Δs p2-Δp1。
A kind of porous media material viscosity factor and inertial resistance coefficient measurement apparatus, including the fluid being sequentially connected
Generating means, flow stabilisation device, volume control device and experiment pipeline；The experiment pipeline includes：
Test material clamping device, for clamping porous media material；
High pressure scanning means, its front end for being arranged on test material clamping device, to measure fluid flow through porous media
Preceding pressure；
Low-pressure scanning means, its front end for being arranged on test material clamping device, to measure fluid flow through porous media
Pressure afterwards；
Impeller tachymeter, for rate of flow of fluid in measurement experiment pipeline.
Preferably, the fluid generating apparatus are air compressor.
Preferably, the flow stabilisation device includes three pressure-reducing valves of series connection.
Preferably, the volume control device uses choke valve.
Preferably, 8 pressure dispatch tubes of the high pressure scanning means, the pressure dispatch tube is solid installed in pressure pipe
Determine on device, the pressure pipe fixing device is provided centrally with cross bracket, be provided with eight peaces altogether on cross bracket
Dress hole, for installing 8 pressure dispatch tubes.
Preferably, 8 pressure dispatch tubes of the low-pressure scanning means, the pressure dispatch tube is solid installed in pressure pipe
Determine on device, the pressure pipe fixing device is provided centrally with cross bracket, be provided with eight peaces altogether on cross bracket
Dress hole, for installing 8 pressure dispatch tubes.
The beneficial effects of the invention are as follows：Porous media material viscosity factor and inertial resistance coefficient that the present invention is provided
Measurement and method, by measuring the flow velocity of fluid and flowing through pressure difference before and after porous media, can just calculate viscosity factor
With inertial resistance coefficient, simply, high precision, the apparatus structure for obtaining measurement parameter is compact, with low cost, uses ten for computational methods
Divide convenient.
Brief description of the drawings
Fig. 1 is that porous media material viscosity factor of the present invention is totally tied with inertial resistance coefficient measurement apparatus
Structure schematic diagram.
Fig. 2 is experiment pipeline structure schematic diagram of the present invention.
Fig. 3 is pressure pipe fixture structure schematic diagram of the present invention.
Fig. 4 is porous media material viscosity factor of the present invention and inertial resistance coefficient measuring method flow
Figure.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in figure 1, being measured the invention provides a kind of porous media material viscosity factor and inertial resistance coefficient
Device, including source of the gas generation device, source of the gas stabilising arrangement, volume control device and the experiment pipeline being sequentially connected.Wherein, it is described
Source of the gas generation device, can be constant for whole measuring system using an air compressor 110 for 360 liters of compression per minute
Ground provides fluid.
The gas and unstable, the output pressure that can be stablized by source of the gas stabilising arrangement produced from air compressor 110,
It is easy to the measurement of subsequent gases flow velocity.The source of the gas stabilising arrangement realizes regulation stabilization using three pressure-reducing valves 120 of series connection
Air pressure.
Volume control device uses a choke valve 130, can be with the gas flow in control piper.
As shown in Fig. 2 experiment pipeline 140 is core of the invention, including the flow transition device being sequentially arranged
141st, impeller tachymeter 142, high pressure scanning means 143, test material clamping device 144 and low-pressure scanning means 145.
The one end of flow transition device 141 is connected with choke valve 130, allow airflow into experiment pipeline 140 in.Impeller tachymeter 142 can
With the measurement to the fluid velocity in experiment pipeline 140.High pressure scanning means 143 includes that 8 a diameter of 2 millimeters of pressure are passed
Send pipe.As shown in figure 3, pressure dispatch tube is arranged on 146 on pressure pipe fixing device.The center of pressure pipe fixing device 146
Cross bracket is provided with, eight mounting holes are provided with altogether on cross bracket, for installing 8 pressure dispatch tubes.Pressure
Pressure conduction to PSI systems is read pressure value by dispatch tube by PSI systems, by taking 8 data of pressure dispatch tube
Pressure value averagely is obtained, that is, obtains the pressure value before airflow passes porous media.For installing in test material clamping device 144
And clamping porous media, make air-flow need to flow through the how empty medium when being flowed in testing pipeline 140.Low-pressure scanning means
145 is identical with the structure of high pressure scanning means 143, can measure the pressure value after obtaining airflow passes porous media.
As shown in figure 4, being surveyed present invention also offers a kind of porous media material viscosity factor and inertial resistance coefficient
Amount method, step is as follows：
Step one S110, in pipeline is tested porous media is not installed, gives certain air mass flow, swept using high pressure
Imaging apparatus 143 and the measurement fluid of low-pressure scanning means 145 flow through the pressure drop Δ p before and after measurement pipeline1, then by porous media
Material is encased in measurement pipeline, gives identical fluid flow, and measurement fluid flows through the pressure drop Δ p before and after measurement pipeline2, with
And the flow velocity v of fluid, and by being calculated the pressure drop Δ p=Δs p that porous media material causes2-Δp1。
Step 2 S120, pressure drop Δ p and speed v that experiment is obtained are fitted to quadratic polynomial
Δ p=a1v2+a2v
Therefore, it is possible to obtain parameter a1And a2Value.
Step 3 S130, because the porous media equation of momentum in source item for unit length pressure drop, i.e.,：
Δ n is the thickness of porous media material in formula.
Joint porous media material momentum source term
Carrying out derivation can draw：
The expression formula of the α of viscosity factor 1/ is：
Inertial resistance coefficient c2Expression formula be：
μ is the dynamic viscosity of air in formula, and ρ is the density of air.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and implementation method
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (9)
1. a kind of porous media material viscosity factor and inertial resistance coefficient measurement apparatus, it is characterised in that including successively
The fluid generating apparatus of connection, flow stabilisation device, volume control device and experiment pipeline；The experiment pipeline includes：
Test material clamping device, for clamping porous media material；
High pressure scanning means, its front end for being arranged on test material clamping device, before measuring fluid flow through porous media
Pressure；
Low-pressure scanning means, its front end for being arranged on test material clamping device, after measuring fluid flow through porous media
Pressure；
Impeller tachymeter, for rate of flow of fluid in measurement experiment pipeline.
2. porous media material viscosity factor according to claim 1 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the fluid generating apparatus are air compressor.
3. porous media material viscosity factor according to claim 2 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the flow stabilisation device includes three pressure-reducing valves of series connection.
4. porous media material viscosity factor according to claim 3 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, the volume control device uses choke valve.
5. porous media material viscosity factor according to claim 4 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, 8 pressure dispatch tubes of the high pressure scanning means, the pressure dispatch tube is arranged on pressure pipe fixing device,
The pressure pipe fixing device is provided centrally with cross bracket, is provided with eight mounting holes altogether on cross bracket, is used for
8 pressure dispatch tubes are installed.
6. porous media material viscosity factor according to claim 4 and inertial resistance coefficient measurement apparatus, it is special
Levy and be, 8 pressure dispatch tubes of the low-pressure scanning means, the pressure dispatch tube is arranged on pressure pipe fixing device,
The pressure pipe fixing device is provided centrally with cross bracket, is provided with eight mounting holes altogether on cross bracket, is used for
8 pressure dispatch tubes are installed.
7. a kind of porous media material viscosity factor and inertial resistance coefficient measuring method, it is characterised in that including following
Step：
Step one, use sensor obtain fluid flow through porous media material before and after pressure drop Δ P and fluid flow velocity v；
Step 2, Δ P and v are fitted to quadratic polynomial Δ p=a1v2+a2V, obtains parameter a1And a2Value；
Step 3, the calculating α of viscosity factor 1/ and inertial resistance coefficient C2
Δ n is the thickness of porous media material in formula, and μ is the dynamic viscosity of fluid, and ρ is the density of fluid.
8. porous media material viscosity factor according to claim 7 and inertial resistance coefficient measuring method, it is special
Levy and be, the fluid is air.
9. porous media material viscosity factor according to claim 8 and inertial resistance coefficient measuring method, it is special
Levy and be, in step one, porous media material is not installed in pipeline is measured first, give certain fluid flow, measurement stream
Body flows through the pressure drop Δ p before and after measurement pipeline1；Then porous media material is encased in measurement pipeline, gives identical stream
Body flow, measurement fluid flows through the pressure drop Δ p before and after measurement pipeline2, and make Δ p=Δs p2-Δp1。
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271331A (en) * | 2017-07-11 | 2017-10-20 | 华南理工大学 | A kind of measuring method of pipe tobacco to main flume flow resistance coefficient |
| CN108872017A (en) * | 2018-06-25 | 2018-11-23 | 武汉钢铁有限公司 | The detection device and detection method of silicon steel laminations viscous drag and inertial resistance coefficient |
| CN109117579A (en) * | 2018-08-30 | 2019-01-01 | 沈阳云仿科技有限公司 | A kind of design and calculation method of multi-hole orifice flowmeter |
| CN109765028A (en) * | 2018-12-18 | 2019-05-17 | 华南农业大学 | A kind of device and measurement ventilation resistance method of measurement vegetable and fruit packaging ventilation resistance |
| CN109975180A (en) * | 2019-04-18 | 2019-07-05 | 龙岩学院 | Goaf resistance coefficient test device and method under impact load |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201688936U (en) * | 2010-05-21 | 2010-12-29 | 北汽福田汽车股份有限公司 | Automobile intake resistance measuring apparatus |
| CN202101704U (en) * | 2011-05-26 | 2012-01-04 | 上海华强浮罗仪表有限公司 | Porous pressure measurement Verabar flowmeter |
| CN203203632U (en) * | 2013-04-27 | 2013-09-18 | 宁夏厚源自控科技有限公司 | Inserted-type and double-V-shaped multi-point measuring device |
| CN203672418U (en) * | 2014-01-05 | 2014-06-25 | 石家庄高新区中正仪器仪表有限公司 | Flow measuring device used for large-diameter small-flow pipeline |
| CN104198331A (en) * | 2014-09-09 | 2014-12-10 | 大连理工大学 | Constant heat flux heating device and experimental device for performing constant heat flux heating on power-law fluid in porous medium by using device |
| CN104296962A (en) * | 2014-10-23 | 2015-01-21 | 东北石油大学 | Experimental device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium |
| CN206459810U (en) * | 2017-02-28 | 2017-09-01 | 吉林大学 | Porous media viscosity factor and inertial resistance coefficient measurement apparatus |
-
2017
- 2017-02-28 CN CN201710113586.6A patent/CN106706268A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201688936U (en) * | 2010-05-21 | 2010-12-29 | 北汽福田汽车股份有限公司 | Automobile intake resistance measuring apparatus |
| CN202101704U (en) * | 2011-05-26 | 2012-01-04 | 上海华强浮罗仪表有限公司 | Porous pressure measurement Verabar flowmeter |
| CN203203632U (en) * | 2013-04-27 | 2013-09-18 | 宁夏厚源自控科技有限公司 | Inserted-type and double-V-shaped multi-point measuring device |
| CN203672418U (en) * | 2014-01-05 | 2014-06-25 | 石家庄高新区中正仪器仪表有限公司 | Flow measuring device used for large-diameter small-flow pipeline |
| CN104198331A (en) * | 2014-09-09 | 2014-12-10 | 大连理工大学 | Constant heat flux heating device and experimental device for performing constant heat flux heating on power-law fluid in porous medium by using device |
| CN104296962A (en) * | 2014-10-23 | 2015-01-21 | 东北石油大学 | Experimental device for measuring viscous resistance coefficient and inertial resistance coefficient of porous medium |
| CN206459810U (en) * | 2017-02-28 | 2017-09-01 | 吉林大学 | Porous media viscosity factor and inertial resistance coefficient measurement apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 陈叶青: "易汽化介质泵送系统流动特性研究及控制优化", no. 02, pages 43 - 44 * |
| 黄煌: "卷烟烟气通过卷烟纸向外扩散的机理研究", no. 02, pages 45 - 47 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271331A (en) * | 2017-07-11 | 2017-10-20 | 华南理工大学 | A kind of measuring method of pipe tobacco to main flume flow resistance coefficient |
| CN108872017A (en) * | 2018-06-25 | 2018-11-23 | 武汉钢铁有限公司 | The detection device and detection method of silicon steel laminations viscous drag and inertial resistance coefficient |
| CN108872017B (en) * | 2018-06-25 | 2020-12-11 | 武汉钢铁有限公司 | Detection device and detection method for viscous resistance and inertial resistance coefficient of silicon steel lamination |
| CN109117579A (en) * | 2018-08-30 | 2019-01-01 | 沈阳云仿科技有限公司 | A kind of design and calculation method of multi-hole orifice flowmeter |
| CN109117579B (en) * | 2018-08-30 | 2022-12-27 | 沈阳云仿致准科技股份有限公司 | Design calculation method of porous orifice plate flowmeter |
| CN109765028A (en) * | 2018-12-18 | 2019-05-17 | 华南农业大学 | A kind of device and measurement ventilation resistance method of measurement vegetable and fruit packaging ventilation resistance |
| CN109975180A (en) * | 2019-04-18 | 2019-07-05 | 龙岩学院 | Goaf resistance coefficient test device and method under impact load |
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